In a grid with a fixed-width col and forceFit: true, hiding columns breaks rendering

In a grid with a fixed-width col and forceFit: true, hiding columns breaks rendering

Ext version tested:

Ext 3.3.1

Adapter used:

prototype

css used:

ext-all.css

Browser versions tested against:

Chromium 12.0.700.0

FF3.6.15 (firebug 1.6.2 installed)

Operating System:

Ubuntu Linux 10.10

Description:

If you have a GridPanel whose viewConfig contains "forceFit: true" and it has a column width "fixed: true", if you hide all of the columns but the one with the fixed with, when you then un-hide any other column, the grid rendering breaks horribly.

Test Case:

This example is based on the official Array Grid example. The code has been modified to show off this particular bug.